<!DOCTYPE html>
<html>

<head>
    {% block head %}
    <link rel="stylesheet" href="style.css" />
    <title>{% block title %}title{% endblock %} 123</title>
    {% endblock %}
</head>

<body>
    <div id="content">{% block content %}{% endblock %}</div>
    <div id="footer">
        {% block footer %} © Copyright 2011 by <a href="http://domain.invalid/">you</a>. {% endblock %}
    </div>
</body>

</html>